I had to grind the clamps to get them to fit the original intake with the headers, I haven't installed the intake yet. But I have a whole batch of the clamps so I will be ok. The edelbrock intake doesn't fit very well either. As a matter of fact, I am pretty sure with the headers I have I will grind into the heating jacket of the intake if I go far enough to get it to fit, so I bought the fenton....